Means and method of forming and feeding weldrods



Filed Hay 8. 193@ mmm 'Patented ug. 25, 193.1

HOWARD J. BURNISH, OF MILWAUKEE, WISCONSIN MEANS AND METHOD OIE FQRMING AND FEEDING WELDRODS Application lled May 8, 1930. Serial No. 450,848.

This invention relates to improvements in 'welding rod or wire and method of making the same, and has moreA particular reference to the type of rod orwire in which the same is formed as an enclosing shell or casing into which the fluXing material is inserted .during the formation of the rod, and Aduring the process of feeding the completed structure to the work.

1o A further object is to provide improved means for feeding'two strips of material together, preferably from reels into shaping mechanism to form semi-circular members which are brought together to provide a hollow casing, the fluxing material being 1 .delivered between the members and into the casing either by gravity or forced feed, while the casing members are being assembled, and then feeding the -completed structure to the Work directly as it is formed.

A further vobject is to provide improved means' for heat treating the material constituting the core or flux to partially reduce the same and thereby. tending to solidify the material by removing moisture and prepare the iiux to burn consistently.

To the attainment of these ends and the accomplishment of other new and useful objects as'will appear, the invention consists in the features of novelty in substantially the construction, combination'and arrangement of the several parts hereinafter more fully described and claimed and shown in the accompanying drawings illustrating this invention, and in which Figure 1 is a diagrammatic view, partly in elevation and partly in section, of mechanism of this character constructed in accordanoe. with the principles of this invention.

Figure 2 is a top plan view of Figure 1. Figure 3 is an enlarged detail sectional view of one end of the welding rod showing the means for heat treating the same. Figure 4 is a detail sectional viewtaken on line 4 4, Figure 3. v

Figure 5 is an enlargedl detail view, partly in elevation and partly in section, of the shaping mechanism and the means for feeding the flux into the structure.

Figure 6 is a detail sectional view taken on line 6 6, Figure 5.

Figure 7 is a detail sectional view taken on line ,7-7, Figure 5.

Referring more particularly to the drawings the numerals 10 and 11 designate two reels upon which are wound strips of material 12 and 13 from which the outer casing of the wire or rod is to be formed. The strips of material are fed towards each other' by means of feeding rolls 14-15 which co-operatc respectively with rolls 16--17, the latter being preferably mounted in adjustable bearings 18 by means of which the rolls 16-17 may be respectively adjusted toward or away' from the rolls 14-15 to compensate varying thicknesses of the material being used.

The feeding rolls 14-15 are adapted to be rotated in any desired or suitable manner preferablyfrom a shaft 19 which is rotated from any suitable source of power (not shown). This shaft is journaled in a suitable bearing 20 and has connectedrwith it gear wheels 21-22 preferably of the beveled type, which mesh respectively with gear wheels 23-24 secured respectively to the feeding rolls 14 and 15.r

The gears 21-22 are so arranged with respect to the gears 23-24 as to cause the rolls 14-15 to rotate towards each other as indicated by the -arrows in Figure 1.

Co-operating pairs of guides or forming shoes 25-26 and 27-28 are provided preferably adjacent the respective feeding rolls 14-15 to receive the respective strips 12 and 13 therebetween and to shape the strips into semi-circular formations as shown more clearly in Figure 7.

The shoes or guides 26--28 are adjustably mounted with respect to the co-operating shoes or guides 25-27 in any suitable manner such as by means of adjusting screws 30, and the co-operating faces 3l-32 of the respective shoes may be of any desired configuration to produce the desired shape to the strips 12-13.

Supported in any suitable manner is a hopper 33 provided with a discharge outlet .34, the extremity 35 of which outlet is disposed at a point approximately in close proximity to the outlet end of the co-.operating shoes -26-27-28, and the end of the outlet chute is provided with a shoulder-36,

This element -38 is rotatably supported in any suitable manner and is adapted to be rotated preferably by means of a'gear 39 which meshes with a gear 40, and the latter is secured to a pulley 41 for rotation there- With. Y A Passing over the pulley 41 is an endless `Hexible member 42 which also passes over a pulley 43 that is connected with the feed roll 15 for rotation therewith so that when the feed roll 15 is rotated motion will be communicated through the belt 42 to the pulley 41 and thereby rotate the feeder or' agitator 38. Y

The shoulder 36 serves as a means for preventing thefluxing material from retrograde movement when forced between the 'members by the agitator or feeding member.

The members 12 and 13 after they are shaped pass between co-operating rollers 44 which are preferably rotated by the engagev ment of the strips 12 and 13 therewith. Af-

ter the strips have been vshaped the proximate edges are brought in close proximity t0 each other and when passing between the rollers 44 these edges will be forced together to form a hollow casing and the iuxing material is fed into the casing as the strips are forced together.

These rollers 44 are preferably arranged 1n proximity to the surface 45 upon which the work is to be performed so that when the l rod or wire is formed it will be fed directly to the work and the rollers 44 prevent the strips 12 and 13 forming the rod, from separation. v

In operation, the arc 46 produced between the end of the rod and the work 45 will operate to fuse therod or wire sections together and in the-burning or consumption of the rod or wire during the working operatlon, the center mass liberates beneficial gas to act asa blanket around the are as indicated at 47, as well as various elements causing the same, in the center mass, to .become alloyed with thedeposit upon the'work.

Furthermore, the-smudge or smoke produced by partial combustion of the ux core ory center ingredient 37 will flow through a metallic spray stream between the end of the rod or wire and the work in order to reach the atmosphere. In passing through such a streamithe gases' are further reduced and through this process ,the metallic spray stream between the rod and work will be puriiied, so to speak, resulting in a more homogeneous metallic deposit on the work, and overcomes an outstanding difficulty in obtaining a clean weld.

If desiredl a heater 48 may be provided, preferably of the type through which tho rod'or wire as it is ormed passes, after it leaves the rolls '44 and before the extremity thereof is brought into Contact with the work, with the result that the material constituting the core or flux may be heated to expel moisture therefrom and partially dehydrate the same, thereby tending to solidify the material and prepare the fiux -to burn consistently.

With this invention it will be manifest that a. composite rod orl wirevis produced by feeding separate strips of ,material continuously towards each other to place their lateral faces in proximity'toleach other, during which feeding movement the rods will be shaped so that'when brought together they will form a hollow casing into which the fluxing material is fed, the completed rod being fed to the work directly it is formed.

' With this invention' also it will be manifest thatit is notl necessary to secure the rod or wire sections together as the heat of the arc will tend to flux the same to a certain extent and this in combination with the holding rollers will prevent the rod sections from becoming separated. A

This will obviate the necessity of form-4 ing the rods or wires in predetermined vlengths and atvthe same time will produce mechanism for continuously producing and feeding the rod or wire to the work directly it is formed.

While the preferred form of the invention has been'herein shown and described, it is to be understood that various changes may be made in the details of construction and in the combination and arrangement of the several parts, within the scope of the claims, without departing from the spirit of this invention.

What is claimed as new is 1. In a welding rod forming and feeding .machina means for shaping two 'strips of material and feeding them together to provide a hollow enclosing casing, and means for feeding fluxing material into said casing as the latter is formed to provide a composlte welding rod, said rod being supplied to the work directly it is formed.

2. 'I n a weldingl rod forming and feeding machine, means for shaping two strips of material and feeding them together to provide a hollow enclosing casing, means for feeding uxing material into said casing as the latter is formed to provide a composite Welding rod, said rod being supplied to the work directly it is formed, and means for heat treating the rod to remove moisture from the flux.

3. In a welding rod'forming and feeding l `material between said members after they are shaped and as they are being forced together laterally, to produce a composite welding prod, the said rod being fed to the work directly it is formed.

5. In a welding rod forming and feeding machine, means for feeding two strips of material, shaping themv and pressing them laterally against each other to form a hollow casing, means for feeding fluxing material between said members after they are shaped and as they are being forced together laterally, to produce xa composite welding rod, the said rod being fed to the work directly it is formed, and'means for heat, treating the rod to expel moisture from the fluxing material as the rod is being fed to the work. e

6. In a welding rod forming and feeding machine, means for feeding two strips of material, shaping them and pressing them laterally against each other to form a hollow casing, means for feeding luxing material between said members'after they are shaped and as they are bein-g forced together laterally, to produce a composite Ewelding rod, the said rod being fed to the work directly it is formed and means whereby the parts of the shaping means may be relatively adjusted to nesses of the material from which the rod formed. "17. In a welding rod forming and feeding machine, means for feeding two strips of material to gradually place their` lateral faces in close roXimity to each other, means for shaping t e strips as they are being fed, to form when assembled a hollow casing, means for pressing said members together, and means for feeding fluxing materialinto the casing thus formed to produce a composite vwelding rod, the said rod being fed to the work directly itis formed.

8. In a welding rod forming and feeding compensate differentthick# machine, means-for feeding two strips of material to gradually place their lateral faces 1n close proximity to each other, means Vfor shaping the strips as they. are being fed,

to form when Aassembled a hollow casing, means for pressing said members together, and means for feeding fluxing material into the casing thus formed to produce a composite welding rod, the said rod being fed to the work' directly it is formed, the arc formed between the rod and the Work serving to fuse the parts of the rod together.

9. In a welding rod forming and feeding machine, means for feeding two strips of material to gradually place their lateral faces in close proximity to each other, means for shaping the strips as they are being fed, to form when assembled a hollow casing, means for pressing said members together, means for feeding fluxing material into the casing thus formed to produce va composite welding rod, the said rod being fed to `the work directly it is formed, and means for heat treating the rod to expel moisture from the luxing material, the arc 4formed between the work and the work serving to fuse the parts of the rod together.

10. In a welding rod forming and feeding machine, means for continuously feeding two strips of material to gradually place their lateral faces'in close proximity to each other, means forshaping the strips as they are being fed, to form when assembled a hollow casing, means for pressing said members together, and meansy for feeding fluxing material into the casing thus formed to produce a composite welding rod, the said rod being fed to the work directly it is formed.

1l. In a welding rod forming and feeding machine,'means for continuously feeding two strips of material to gradually place their lateral faces in close proximityA to each other, l

rod being fed to 'the work directly it is formed.

12. The method of continuously forming composite welding rods which consists in feeding the rod material from separate supplies to place their lateral faces in close prox imity, shaping the supplies to cause the component parts of the-rod when assembled to form a hollow casing, feeding iuxing material into the casing as it is being ormed, then pressing the component parts of the rod together to cause their lateral faces to contact, and then feeding the rod to the work directly' it is formed.

13. The method of forming welding rods or wire which consists in shaping and continuously feeding two strips of material torial into a hollow enclosing casing, and4 means for feeding iuxing material into said casing as the latter is formed to provide a composite Welding rod, said composite rod` being supplied to the Work directly it is formed.

In testimonyvwhereof I have signed my name to this specification, on this 19th day of April, A. D. 1930.

- HOWARD J. BURNISH. 

